PGI-1 Talk: Prof. Dr. Lars Pastewka

Quantum Theory of Materials Seminar

From 3D to 2D to 1D in modeling contact and adhesion

Mechanical deformation of the contacting bodies plays a crucial role in friction and adhesion. Over the past century, a variety of numerical methods have been employed to study contact properties of solids, from a full 3D discretization of the solids interior to a 1D representation of just the perimeter of the contacting region. In this talk I will briefly outline how systematically coarse-grain the contact system from 3D to 1D. I will then present recent results on the contact between rough surface, in particular the evolution of subsurface plasticity and elastic shakedown [1], where a full 3D treatment in necessary, and adhesion of soft solids [2] where numerical and analytic insights can be obtained by from just the 1D contact line.

[1] Frérot, Pastewka, Tribol. Lett. 72, 23 (2024) [2] Sanner, Kumar, Dhinojwala, Jacobs, Pastewka, Sci. Adv. (in press) and arXiv:2307.14233

Contact

Dr. Bo Persson
Phone: +49 2461 61-5143
Email: b.persson@fz-juelich.de